correction, full quote
> from Burrow, The Sanskrit Lanmguage, pp 335-336
> "
The a-Aorist
The form and conjugation of the a-aorist agrees with the imperfect
accented a-class : ásicam, ásicas, ásicat, etc., cf. átudam, átudas,
átudat, etc. The stems agree in apophony, and also in accent, in the
comparatively rare instances where the unaugmented aorist forms bear
the accent: S. 1 ruhám, 2 vidás, 3 dhr.s.át, vidát, P. 3 dhvasán,
vídán, tr.pán ; regularly in the participle tr.pánt- dhr.s.ánt-,
s´ucánt-, etc., middle, s´ucáma:na-, etc.
Correspondences with other languages attest the IE date of a number of
such formations : ávidat, Gk. ido:n, inf. idei~n, Arm. egil; dr.s´an,
Gk. édrakon; áricat, cf. Gk. élipon, Arm. elik' ; budhanta, cf. Gk.
epúnthonto. At the same time there is sometimes disagreement between
languages in the assignment of a form to imperfect or aorist: Skt.
ádas´at impf. : Gk. édakon aor. ; Skt. ábhujat impf. : Gk. épuge aor.
The suffixal accent is retained in Greek in participles and
infinitives (lipó:n, lipei~n).
In addition to the regular type there are a number of a-aorists in
Sanskrit whose form agrees rather with imperfects of the first class
rather than of the sixth class since they have gun.a of root :
e.g.ás´akam, ásanam, ásaram, ákaras, ágamat, atanat, ásadat. This is
the normal form of the a-aorist for roots consisting of two consonants
and the thematic vowel. Furthermore where accent occurs these forms
are accented like stems of the first present class. Examples of this
are káras, sánat, sárat, dárs´am ( = the Gk. present stem
dérkomai), gáman, sádatam, sádatam, and the participles sádant-,
sánant (these have also contaminated the regular type above to some
extent, so that forms accented like rúhat occur occasionally).
A number of the stems listed here are probably thematisations of root
aorists, and not ancient. For instance the a-aorist ágamat appears
later in the history of the language than the root aorist agan. On the
other hand some are clearly old (e.g. ásadat), and since the type
appears also in Greek (egénrto, génesthai) it must be referred to
Indo-European.
"
Torsten